ps_background.pro
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; docformat = 'rst'
;
; NAME:
; PS_Background
;
; PURPOSE:
; Provides a device-independent way to set the background color in the PostScript device.
;
;******************************************************************************************;
; ;
; Copyright (c) 2010, by Fanning Software Consulting, Inc. All rights reserved. ;
; ;
; Redistribution and use in source and binary forms, with or without ;
; modification, are permitted provided that the following conditions are met: ;
; ;
; * Redistributions of source code must retain the above copyright ;
; notice, this list of conditions and the following disclaimer. ;
; * Redistributions in binary form must reproduce the above copyright ;
; notice, this list of conditions and the following disclaimer in the ;
; documentation and/or other materials provided with the distribution. ;
; * Neither the name of Fanning Software Consulting, Inc. nor the names of its ;
; contributors may be used to endorse or promote products derived from this ;
; software without specific prior written permission. ;
; ;
; THIS SOFTWARE IS PROVIDED BY FANNING SOFTWARE CONSULTING, INC. ''AS IS'' AND ANY ;
; EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES ;
; OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT ;
; SHALL FANNING SOFTWARE CONSULTING, INC. BE LIABLE FOR ANY DIRECT, INDIRECT, ;
; INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED ;
; TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; ;
; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ;
; ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT ;
; (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS ;
; SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. ;
;******************************************************************************************;
;
;+
; :Description:
; Provides a device-independent way to set the background color in the PostScript device.
;
; :Categories:
; Graphics, Utilities
;
; :Params:
; color: in, required, type=string/integer, default='white'
; The color that is used for the PostScript background. A polygon of
; this color is written to the PostScript file and fills the PostScript
; "window".
;
; :Examples:
; IDL> PS_Background, 'rose'
;
; :Author:
; FANNING SOFTWARE CONSULTING::
; David W. Fanning
; 1645 Sheely Drive
; Fort Collins, CO 80526 USA
; Phone: 970-221-0438
; E-mail: david@idlcoyote.com
; Coyote's Guide to IDL Programming: http://www.idlcoyote.com
;
; :History:
; Change History::
; Written, 17 November 2010. DWF.
; Modified to use gcColorFill so that color is done with decomposed color. 24 Dec 2010. DWF.
;
; :Copyright:
; Copyright (c) 2010, Fanning Software Consulting, Inc.
;-
PRO PS_Background, color
Compile_Opt idl2
On_Error, 2
; Set default color, if not passed in.
IF N_Elements(color) EQ 0 THEN color = 'white'
; Create a background color.
TVLCT, rr, gg, bb, /GET
IF StrUpCase(color) NE 'WHITE' THEN BEGIN
cgCOLORFILL, [1, 1, !D.X_Size, !D.X_Size, 1], $
[1, !D.Y_Size, !D.Y_Size, 1, 1], $
/DEVICE, COLOR=color
ENDIF
TVLCT, rr, gg, bb
END